package com.gxa.meiye.sso.utils;

import com.auth0.jwt.JWT;
import com.auth0.jwt.JWTCreator;
import com.auth0.jwt.algorithms.Algorithm;
import com.auth0.jwt.interfaces.DecodedJWT;

import java.util.Calendar;
import java.util.Map;

public class JwtUtils {
    private static final String  SING="abc";
    //生成token
    public static String getToken(Map<String,String> map){
        Calendar instance = Calendar.getInstance();
        instance.add(Calendar.SECOND,30);//默认时间7天
        //创建jwt builder
        JWTCreator.Builder builder = JWT.create();
        //payload
        map.forEach((k,v)->{
            builder.withClaim(k,v);
        });
        String token = builder.withExpiresAt(instance.getTime())//指定令牌过期时间
                .sign(Algorithm.HMAC256(SING));//sign
        return  token;
    }
    //验证合法性
    public static DecodedJWT verify(String token){
        return JWT.require(Algorithm.HMAC256(SING)).build().verify(token);
    }
//    //获取token信息方法
//    public static DecodedJWT getTokenInfo(String token){
//        DecodedJWT verify = JWT.require(Algorithm.HMAC256(SING)).build().verify(token);
//        //String username = verify.getClaim("username").asString();
//    }
}
